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MDEV-7398 mysqld segfaults on FreeBSD 10.1 i386 when built with clang 3.4

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in cmake tests let's treat clang like gcc (same options,
same builtins) in many cases.

* don't check the compiler when
  * testing for -fvisibility=hidden support
  * testing for HAVE_ABI_CXA_DEMANGLE
  * testing for HAVE_GCC_ATOMIC_BUILTINS
  * when removing options with string(replace)
  * when running ${CC} --version (ignore the error instead)
* run ABI checks for clang
* use "canonical" gcc flags for clang
* fix groonga too

Also:

* add cmake detection for gcc __atomic_* builtins. they might be
  supported (__ATOMIC_SEQ_CST is defined), but not for all operand
  sizes. In particular, 64-bit atomic load is problematic on i386
* cache check results for Windows
* remove the test for HAVE_CXXABI_H (HAVE_ABI_CXA_DEMANGLE is
  suffifient)
This commit is contained in:
Sergei Golubchik
2015-06-08 21:06:56 +02:00
parent 7bfda275a1
commit 66fd45afce
12 changed files with 40 additions and 46 deletions
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3
include/my_stacktrace.h
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@@ -35,8 +35,7 @@
#define HAVE_WRITE_CORE
#if HAVE_BACKTRACE && HAVE_BACKTRACE_SYMBOLS && \
HAVE_CXXABI_H && HAVE_ABI_CXA_DEMANGLE && \
#if HAVE_BACKTRACE && HAVE_BACKTRACE_SYMBOLS && HAVE_ABI_CXA_DEMANGLE && \
HAVE_WEAK_SYMBOL
#define BACKTRACE_DEMANGLE 1
#endif